Mercurial > dive4elements > river
view flys-client/src/main/java/de/intevation/flys/client/server/FixingsKMChartServiceImpl.java @ 4215:c179cd02177d
Logout the current user
Add code to the logout button to remove the current user from the session and to
redirect the browser window to the login page.
Part of flys/issue916 (Logout: "Abmelden" Knopf mit Funktion belegen)
author | Björn Ricks <bjoern.ricks@intevation.de> |
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date | Tue, 23 Oct 2012 09:59:16 +0200 |
parents | 51ed89b754ae |
children |
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package de.intevation.flys.client.server; import de.intevation.artifacts.common.utils.XMLUtils; import de.intevation.artifacts.httpclient.http.HttpClient; import de.intevation.artifacts.httpclient.http.HttpClientImpl; import de.intevation.artifacts.httpclient.exceptions.ConnectionException; import de.intevation.artifacts.httpclient.http.response.StreamResponseHandler; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.log4j.Logger; import org.w3c.dom.Document; import org.w3c.dom.Element; import org.w3c.dom.NodeList; public class FixingsKMChartServiceImpl extends HttpServlet { private static final Logger log = Logger.getLogger(FixingsKMChartServiceImpl.class); public static final String SERVICE_NAME = "fixings-km-chart"; public FixingsKMChartServiceImpl() { } public void doGet(HttpServletRequest req, HttpServletResponse resp) { log.info("FixingsKMChartServiceImpl.doGet"); String url = getServletContext().getInitParameter("server-url"); String locale = req.getParameter("locale"); String filter = req.getParameter("filter"); if (filter == null || filter.length() == 0) { log.warn("Missing 'filter' parameter."); return; } if (locale == null || locale.length() == 0) { locale = "de"; } Document filterDoc = XMLUtils.jsonToXML(filter); if (filterDoc == null) { log.warn("Creating filter document failed."); return; } InputStream in; try { HttpClient client = new HttpClientImpl(url, locale); in = (InputStream)client.callService( url, // XXX: Why? The URL is passed by construction already. SERVICE_NAME, filterDoc, new StreamResponseHandler()); } catch (ConnectionException ce) { log.error(ce); return; } resp.setHeader("Content-Type", guessMIMEType(filterDoc)); try { OutputStream out = resp.getOutputStream(); byte [] buf = new byte[4096]; int i = -1; while ((i = in.read(buf)) >= 0) { out.write(buf, 0, i); } out.flush(); } catch (IOException ioe) { log.error(ioe); } finally { try { in.close(); } catch (IOException ioe) { /* ignored */ } } } protected static String guessMIMEType(Document document) { NodeList formats = document.getElementsByTagName("format"); String format = "png"; if (formats.getLength() > 0) { String type = ((Element)formats.item(0)).getAttribute("type"); if (type.length() > 0) { format = type; } } return "image/" + format; } } // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :